TWM558756U - Bicycle rear derailleur - Google Patents
Bicycle rear derailleur Download PDFInfo
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- TWM558756U TWM558756U TW106216731U TW106216731U TWM558756U TW M558756 U TWM558756 U TW M558756U TW 106216731 U TW106216731 U TW 106216731U TW 106216731 U TW106216731 U TW 106216731U TW M558756 U TWM558756 U TW M558756U
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- rear derailleur
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Abstract
本創作之自行車後變速器包括:一安裝部,供安裝至一自行車;一連桿機構,與該安裝部樞接且設有一供固定一變速線之延伸部,該延伸部設有一鎖線點,該延伸部位於該連桿機構之一外側面的內側;一導鏈機構,與該連桿機構樞接且可繞一軸線轉動,包括一相對接近該軸線之第一導輪及一相對遠離該軸線之第二導輪,該第一導輪具有一導輪平面,定義垂直該軸線及該第二導輪之軸心的延伸線為一第一參考線;其中,當該自行車後變速器安裝於該自行車而位於相對低位狀態之一起始位置時,該鎖線點位於該第一參考線與該安裝部之間,該鎖線點在該自行車後變速器相對一齒盤組位移之變速行程中不越過該導輪平面。The bicycle rear derailleur includes: a mounting portion for mounting to a bicycle; a link mechanism pivotally connected to the mounting portion and an extension portion for fixing a shifting line, the extending portion being provided with a locking point, An extension portion is located on an inner side of one of the outer sides of the link mechanism; a chain guide mechanism pivotally connected to the link mechanism and rotatable about an axis, including a first guide wheel relatively close to the axis and a relatively remote from the axis a second guide wheel, the first guide wheel has a guide wheel plane, and an extension line defining the axis of the axis and the axis of the second guide wheel is a first reference line; wherein when the bicycle rear derailleur is mounted on the When the bicycle is in a starting position of a relatively low state, the lock line is located between the first reference line and the mounting portion, and the lock line does not cross the guide in the shifting stroke of the bicycle rear derailleur relative to a toothed disc group displacement Wheel plane.
Description
本創作係有關於一種自行車後變速器。This creation is about a bicycle rear derailleur.
可變速自行車因其檔位可依據不同施力需求(平面、上坡、下坡等行車環境)進行切換,因此廣受消費者青睞。Variable-speed bicycles are widely favored by consumers because their gear positions can be switched according to different force requirements (flat, uphill, downhill, etc.).
其中,該可變速自行車之變速器是透過一固定座樞接於該可變速自行車之一部分。該變速器是靠該固定座懸吊支撐,在拉動變速線施力時,連動位移構件而使導鏈機構產生側向位移,進而使鏈條於一齒盤組上變換不同尺寸之齒盤,以達變速功能。Wherein, the transmission of the variable speed bicycle is pivotally connected to a part of the variable speed bicycle through a fixed seat. The transmission is suspended by the fixed seat, and when the shifting line is applied, the displacement member is linked to cause lateral displacement of the chain guide mechanism, thereby causing the chain to change the toothed discs of different sizes on a set of toothed discs. Variable speed function.
然而,習知可變速自行車之變速器的結構中,如TWI331111揭露了一種低型面後撥鏈器,其致動臂橫設置於鍊條導件與後車輪軸之間,安裝於車架時,安裝工具或使用者雙手容易接觸後車輪之輻絲,安裝困難,且致動臂靠近後車輪輻絲之一端設有鎖設纜線之鎖線點,騎乘時,纜線與輻絲容易產生接觸碰撞,增加騎乘時之危險。故另有如CN204096023U號專利,將第二連桿構件設於連桿構件的側向外側,容易安裝,但由於第二連桿遠離連桿構件,騎乘於登山或越野環境時,第二連桿容易纏繞樹枝等異物,且第二連桿偏向外側,同時增加與路面撞擊之可能,造成機構耗損,使用者必須經常性檢查維修,增加使用維護成本。However, in the structure of a conventional variable speed bicycle transmission, such as TWI331111, a low profile rear derailleur is disclosed, the actuating arm is disposed between the chain guide and the rear wheel axle, and is mounted when mounted on the frame. The tool or the user's hands are easy to contact with the spokes of the rear wheel, and the installation is difficult, and the actuation arm is provided with a lock line point for locking the cable near one end of the rear wheel spoke. When riding, the cable and the spoke are easily contacted. Collision increases the risk of riding. Therefore, as another patent of CN204096023U, the second link member is disposed laterally outward of the link member, which is easy to install, but the second link is far away from the link member and rides on a mountaineering or off-road environment, the second link It is easy to wrap foreign objects such as branches, and the second link is biased to the outside, and at the same time, the possibility of collision with the road surface is increased, and the mechanism is worn out. The user must frequently check and repair, and increase the maintenance cost.
因此,有必要提供一種新穎且具有進步性之自行車後變速器,以解決上述之問題。Therefore, it is necessary to provide a novel and progressive bicycle rear derailleur to solve the above problems.
本創作之主要目的在於提供一種自行車後變速器,可平順、精準地變速。The main purpose of this creation is to provide a bicycle rear derailleur that can shift smoothly and accurately.
為達成上述目的,本創作提供一種自行車後變速器,包括:一安裝部,供安裝至一自行車;一連桿機構,與該安裝部樞接且設有一供固定一變速線之延伸部,該延伸部設有一鎖線點,該延伸部位於該連桿機構之一外側面的內側;一導鏈機構,與該連桿機構樞接且可繞一軸線轉動,包括一相對接近該軸線之第一導輪及一相對遠離該軸線之第二導輪,該第一導輪具有一導輪平面,定義垂直該軸線及該第二導輪之軸心的延伸線為一第一參考線;其中,當該自行車後變速器安裝於該自行車而位於相對低位狀態之一起始位置時,該鎖線點位於該第一參考線與該安裝部之間,該鎖線點在該自行車後變速器相對一齒盤組位移之變速行程中不越過該導輪平面。In order to achieve the above object, the present invention provides a bicycle rear derailleur comprising: a mounting portion for mounting to a bicycle; a link mechanism pivotally coupled to the mounting portion and having an extension for fixing a shifting line, the extension The portion is provided with a lock line point, the extension portion is located inside the outer side surface of the one of the link mechanisms; a chain guide mechanism pivotally connected to the link mechanism and rotatable about an axis, comprising a first guide relatively close to the axis And a second guide wheel that is relatively far from the axis, the first guide wheel has a guide wheel plane, and an extension line defining the axis of the axis and the axis of the second guide wheel is a first reference line; When the bicycle rear derailleur is mounted on the bicycle and is in a starting position of a relatively low state, the lock line is located between the first reference line and the mounting portion, and the lock line is displaced in the bicycle rear derailleur relative to a set of toothed discs The guide wheel plane is not crossed during the shifting stroke.
以下僅以實施例說明本創作可能之實施態樣,然並非用以限制本創作所欲保護之範疇,合先敘明。The following is a description of possible implementations of the present invention by way of example only, and is not intended to limit the scope of the creation of the present invention.
請參考圖1至6,其顯示本創作之一較佳實施例,本創作之自行車後變速器1包括一安裝部10、一連桿機構20及一導鏈機構30。Referring to FIGS. 1 through 6, there is shown a preferred embodiment of the present invention. The bicycle rear derailleur 1 of the present invention includes a mounting portion 10, a link mechanism 20 and a chain guide mechanism 30.
該安裝部10供安裝至一自行車。該連桿機構20與該安裝部10樞接且設有一供固定一變速線之延伸部22,該延伸部22設有一鎖線點11,該延伸部22位於該連桿機構20之一外側面的內側。該導鏈機構30與該連桿機構20樞接且可繞一軸線A轉動,該導鏈機構30包括一相對接近該軸線A之第一導輪31及一相對遠離該軸線A之第二導輪32,該第一導輪31具有一導輪平面P1,在本實施例中該導輪平面P1為將該第一導輪31二等分之平面,然亦可為該第一導輪31之左或右側平面、或為垂直於該第一及第二導輪31, 32之軸心且通過該第一及第二導輪31, 32之平面,另定義垂直該軸線A及該第二導輪32之軸心的延伸線為一第一參考線L1。其中,當該自行車後變速器1安裝於該自行車而位於相對低位狀態之一起始位置P0時,該鎖線點11位於該第一參考線L1與該安裝部10之間,該鎖線點11在該自行車後變速器1相對一齒盤組100位移之變速行程中不越過該導輪平面P1。藉此,可平順、精準地變速。The mounting portion 10 is for mounting to a bicycle. The link mechanism 20 is pivotally connected to the mounting portion 10 and is provided with an extension portion 22 for fixing a shifting line. The extending portion 22 is provided with a locking point 11 which is located at an outer side of one of the link mechanisms 20 Inside. The chain guide mechanism 30 is pivotally connected to the link mechanism 20 and rotatable about an axis A. The chain guide mechanism 30 includes a first guide wheel 31 relatively close to the axis A and a second guide relatively far from the axis A. The first guide wheel 31 has a guide wheel plane P1. In the embodiment, the guide wheel plane P1 is a plane that bisects the first guide wheel 31, but the first guide wheel 31 may be a left or right plane, or an axis perpendicular to the first and second guide wheels 31, 32 and passing through the planes of the first and second guide wheels 31, 32, further defining the axis A and the second The extension line of the axis of the guide wheel 32 is a first reference line L1. Wherein, when the bicycle rear derailleur 1 is mounted on the bicycle and is in a starting position P0 of a relatively low state, the locking point 11 is located between the first reference line L1 and the mounting portion 10, and the locking point 11 is on the bicycle The shifting stroke of the rear derailleur 1 relative to the displacement of a set of toothed discs 100 does not cross the guide wheel plane P1. This makes it possible to shift smoothly and accurately.
該安裝部10可為一體成型或多構件組成。該安裝部10設有一供導引該變速線之導線孔12,該導線孔12之一端口指向一第一指向D1,該第一指向D1斜向漸近地指向該導輪平面P1,無需過度彎折或無需額外導線構件來導引該變速線,在本實施例中,該導線孔12之另一端口指向一第二指向D2(在此與該第一指向D1位於同一延伸線),該第二指向D2斜向地逐漸遠離該導輪平面P1,例如該第二指向D2及該延伸部之延伸方向在該導輪平面P1上之投影形成一不小於60度之夾角θ。The mounting portion 10 can be formed in one piece or in multiple pieces. The mounting portion 10 is provided with a wire hole 12 for guiding the shifting wire. One port of the wire hole 12 is directed to a first direction D1, and the first pointing point D1 is obliquely asymptotically directed to the guiding wheel plane P1 without excessive bending. Folding or no additional wire member is required to guide the shifting line. In this embodiment, the other port of the wire hole 12 is directed to a second pointing D2 (here, the same extending line as the first pointing D1). The two directions D2 are gradually away from the guide wheel plane P1 obliquely. For example, the projection of the second direction D2 and the extending direction of the extension portion on the guide wheel plane P1 forms an included angle θ of not less than 60 degrees.
該連桿機構20延設有一延伸部22,該延伸部22之設有該鎖線點11,詳細說,該延伸部22整體位於該連桿機構20之外側面21的內側,該鎖線點11設於該延伸部22朝遠離該連桿機構20之一端。該連桿機構20包括複數連桿23,其構成一平行多連桿(例如四連桿)機構,其中一該連桿23位於該安裝部10之一外側面的外側,可增加作動時的穩定性。進一步地說,該延伸部22係一體成形並凸伸於該連桿機構20,形成一流線型之設計,然亦可為兩件式或其他適當的組合結構。The link mechanism 20 is provided with an extension portion 22, and the extension portion 22 is provided with the lock line point 11. In detail, the extension portion 22 is entirely located inside the outer side surface 21 of the link mechanism 20, and the lock line point 11 is provided. The extension 22 faces away from one end of the link mechanism 20. The link mechanism 20 includes a plurality of links 23 that form a parallel multi-link (eg, four-bar linkage) mechanism, wherein one of the links 23 is located outside the outer side of one of the mounting portions 10 to increase stability during actuation. Sex. Further, the extension portion 22 is integrally formed and protrudes from the link mechanism 20 to form a first-line linear design, but may be a two-piece or other suitable combination structure.
較佳地,該鎖線點11在該變速行程中不越過該第二指向D2。另,定義一平行該導輪平面P1且位於該連桿機構20與該導鏈機構30之間的一參考平面P2,該鎖線點11在該變速行程中越過該參考平面P2。此外,本創作之結構亦可變化設計,例如定義該連桿機構20被擋止時與該導鏈機構30間之相對狀態為一低點收靠狀態PL(如未安裝至該自行車上時的收靠狀態),當該連桿機構20在該低點收靠狀態下PL,該鎖線點11位於該導輪平面P1與該連桿機構20之外側面21之間、且位於該第一參考線L1與該安裝部10之間。如此,可在該自行車後變速器1具有較薄厚度下,還具有大範圍之變速行程。Preferably, the lock point 11 does not cross the second direction D2 during the shifting stroke. Further, a reference plane P2 parallel to the guide wheel plane P1 and located between the link mechanism 20 and the chain guide mechanism 30 is defined, and the lock line point 11 passes over the reference plane P2 during the shifting stroke. In addition, the structure of the present invention can also be changed. For example, the relative state between the link mechanism 20 and the chain guide mechanism 30 is defined as a low-point receiving state PL (if not attached to the bicycle). In the ascending state), when the link mechanism 20 is in the low point receiving state PL, the lock line point 11 is located between the guide wheel plane P1 and the outer side surface 21 of the link mechanism 20, and is located at the first reference The line L1 is interposed between the mounting portion 10. Thus, the bicycle rear derailleur 1 has a wide range of shift strokes with a thin thickness.
1‧‧‧自行車後變速器1‧‧‧ Bicycle rear derailleur
10‧‧‧安裝部10‧‧‧Installation Department
11‧‧‧鎖線點11‧‧‧Lock point
12‧‧‧導線孔12‧‧‧Wire hole
20‧‧‧連桿機構20‧‧‧ linkage mechanism
21‧‧‧外側面21‧‧‧Outside
22‧‧‧延伸部22‧‧‧Extension
23‧‧‧連桿23‧‧‧ Connecting rod
30‧‧‧導鏈機構30‧‧‧Chain guide
31‧‧‧第一導輪31‧‧‧First guide wheel
32‧‧‧第二導輪32‧‧‧Second guide wheel
100‧‧‧齒盤組100‧‧‧ tooth plate set
A‧‧‧軸線A‧‧‧ axis
D1‧‧‧第一指向D1‧‧‧ first point
D2‧‧‧第二指向D2‧‧‧second pointing
L1‧‧‧第一參考線L1‧‧‧ first reference line
P0‧‧‧起始位置P0‧‧‧ starting position
P1‧‧‧導輪平面P1‧‧·guide wheel plane
P2‧‧‧參考平面P2‧‧‧ reference plane
PL‧‧‧低點收靠狀態PL‧‧‧ low point of acceptance
θ‧‧‧夾角Θ‧‧‧ angle
圖1為本創作一較佳實施例之收靠狀態立體圖。 圖2為圖1之右側視圖。 圖3為圖1之俯視圖。 圖4為本創作一較佳實施例之展開狀態立體圖。 圖5至6為本創作一較佳實施例之變速作動示意圖。FIG. 1 is a perspective view of a receiving state of a preferred embodiment of the present invention. Figure 2 is a right side view of Figure 1. Figure 3 is a plan view of Figure 1. Figure 4 is a perspective view showing the unfolded state of a preferred embodiment of the present invention. 5 to 6 are schematic views of the shifting operation of a preferred embodiment of the present invention.
Claims (8)
Priority Applications (1)
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TW106216731U TWM558756U (en) | 2017-11-10 | 2017-11-10 | Bicycle rear derailleur |
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TW106216731U TWM558756U (en) | 2017-11-10 | 2017-11-10 | Bicycle rear derailleur |
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TWM558756U true TWM558756U (en) | 2018-04-21 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI647146B (en) * | 2017-11-10 | 2019-01-11 | 台灣微轉股份有限公司 | Bicycle rear derailleur |
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2017
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI647146B (en) * | 2017-11-10 | 2019-01-11 | 台灣微轉股份有限公司 | Bicycle rear derailleur |
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